rpitx/csdr
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Changed every_n_samples in fft_fc to be based on actual input samples

Browse source
This commit is contained in:
Tatu Peltola 2016-10-31 19:14:16 +02:00
parent 1446b62959
commit b6f50cbf06
1 changed files with 4 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
csdr.c
View file

@ -1366,13 +1366,11 @@ int main(int argc, char *argv[])
if(!strcmp(argv[1],"fft_fc"))
{
/* For real FFT, the parameter is the number of output complex bins
/*
For real FFT, the parameter is the number of output complex bins
instead of the actual FFT size.
Thus, the number of input samples used for each FFT is twice the given parameter
and for this reason, out_of_every_n_samples is also doubled
to get correct amount of overlap.
This is not very neat but makes it easier to replace fft_cc by fft_fc
in some applications. */
Number of input samples used for each FFT is twice the given parameter.
This makes it easier to replace fft_cc by fft_fc in some applications. */
if(argc<=3) return badsyntax("need required parameters (fft_out_size, out_of_every_n_samples)");
int fft_in_size=0, fft_out_size=0;
sscanf(argv[2],"%d",&fft_out_size);
@ -1380,7 +1378,6 @@ int main(int argc, char *argv[])
fft_in_size = 2*fft_out_size;
int every_n_samples;
sscanf(argv[3],"%d",&every_n_samples);
every_n_samples *= 2;
int benchmark=0;
int octave=0;
window_t window = WINDOW_DEFAULT;